/* 公共样式 */
* {
	margin: 0;
	padding: 0;
}

ul {
	list-style: none;
}

a {
	text-decoration: none;
}

.flex {
	display: flex;
}

.flex-y-center {
	align-items: center;
}

.flex-x-center {
	justify-content: center;
}

.inner {
	width: 90vw;
	margin: auto;
}